PowerShell GUI, PCI-Geräte in einer ComboBox ausgeben

#PCI-Gerät Location Path angeben

$objForm.Add_Load({
    $objComboBox2.Items.AddRange((Get-WmiObject cim_controller | fl c*))
})
$objComboBox.Add_SelectedIndexChanged({ 
    [System.Windows.Forms.MessageBox]::Show((Get-WmiObject cim_controller | fl c*))
})

$objLabel = New-Object System.Windows.Forms.Label
$objLabel.Location = New-Object System.Drawing.Size(50,150)
$objLabel.Size = New-Object System.Drawing.Size(300,50)
$objLabel.Text = "Wählen sie ein PCI-Gerät aus:"  
$objForm.Controls.Add($objLabel)

$objComboBox2 = New-Object System.Windows.Forms.Combobox
$objComboBox2.Location = New-Object System.Drawing.Size(50,200)
$objComboBox2.Size = New-Object System.Drawing.Size(300,50)
$objComboBox2.Height = 70
$objForm.Controls.Add($objComboBox2)
$objForm.TopMost = $True
$objComboBox2.Add_SelectedIndexChanged({ })